FIELD 01
Particle Physics
CMS collision data, the Higgs sector, and what the vacuum is made of.
CMS · Run-3 · HH→bb̄ττ
A POINT OF VIEW
Arghya Ranjan Das
Science, philosophy and curiosity.
And the things I keep wondering about…
01The Universe
Given enough time, it spreads, forming the Cosmic web. Most of what holds it together has no name.
cthe speed limit
ℏthe smallest action
13.8 Gyrtime elapsed
02The Re-Search
To learn what a thing is, we take it apart. This makes the rest.
arXiv preprint2026
On-Detector Machine Learning for Beam-Induced Background Rejection at a 10 TeV Muon Collider
Rejecting beam-induced background on the detector itself at a 10 TeV muon collider — muon decays in the ring flood the detector, so the filtering has to happen before the data ever leaves the front end.
arXiv preprintarXiv:2608.21327
arXiv preprint2026
On-chip probabilistic inference for charged-particle tracking at the sensor edge
Probabilistic inference implemented directly on-chip at the sensor edge for charged-particle tracking — pushing AI/ML into the detector front-end under extreme latency and power constraints.
arXiv preprintarXiv:2602.15946
arXiv preprint2026
PQuantML: A Tool for End-to-End Hardware-aware Model Compression
An end-to-end tool for hardware-aware compression of machine-learning models — structured pruning and quantization tuned for deployment under real-time, resource-constrained conditions.
arXiv preprintarXiv:2603.26595
Nucl. Instrum. Meth. A 10922026
Robustness of the smartpixels classifier for different simulated sensor geometries and non-ideal detector conditions
How the on-chip smart-pixels classifier holds up when the sensor geometry changes and the detector is not ideal — the robustness study behind putting real-time data reduction on the detector.
Nucl. Instrum. Meth. A 1092PUBLISHED
Nucl. Instrum. Meth. A 10802025
Performance measurements of the electromagnetic calorimeter and readout electronics system for the DarkQuest experiment
Characterization of the electromagnetic calorimeter and readout electronics for DarkQuest, a beam-dump search for dark-sector particles at Fermilab.
Nucl. Instrum. Meth. A 1080arXiv:2502.20590
arXiv preprint2025
Sensor Co-design for smartpixels
Co-designing sensors and on-chip intelligence for the smart-pixels program: coupling detector design with embedded ML from the ground up.
arXiv preprintarXiv:2510.06588
arXiv preprint2025
Characterization of a 28 nm smartpixels ASIC With On-Chip ML for Particle Tracking Detectors
A 28 nm CMOS pixel readout ASIC with in-pixel analog signal processing and on-chip machine-learning data filtering — two 32x8 matrices at a 25 um pitch, each pixel carrying a charge amplifier and a 2-bit flash ADC.
arXiv preprintarXiv:2510.07485
Astrophys. J. 9552023
QPOs in Compact Sources as a Nonlinear Hydrodynamical Resonance: Determining Spin of Compact Objects
Modeling quasi-periodic oscillations in accreting compact sources as a nonlinear hydrodynamical resonance, and using them to constrain the spin of the central compact object.
Astrophys. J. 955arXiv:2308.09759
Eur. Phys. J. C 822022
Asymptotically flat vacuum solution for a rotating black hole in a modified gravity theory
An asymptotically flat rotating black-hole vacuum solution in a modified theory of gravity, with implications for how deviations from general relativity could show up around spinning black holes.
Eur. Phys. J. C 82arXiv:2203.07690
03The Living World
Somewhere the pattern folded over and began to watch itself. It has not stopped since. Why?
Well… that is the question.
04The Signal
More arrives to the Brain than can be kept. There is never enough time to see it, or room to hold it. So something decides, faster than thought, what matters.
FIELD 02
Astrophysics & Gravitation
Black holes and accretion discs, and the oscillations that let us measure spacetime from far away.
QPOs · rotating black holes · modified gravity
FIELD 03
Machine Intelligence
Neural networks small enough to run on the sensor that produced the data.
smart pixels · pruning · quantization
FIELD 04
Real-Time Decisions
Trigger systems: choosing in microseconds which collisions are kept.
trigger systems · 40 MHz
FIELD 05
Philosophy of the Universe
What counts as an explanation, and what a measurement actually settles.
it from bit · the measurement problem
FIELD 06
Simulation & Spacetime
Whether spacetime is fundamental, and what it would take to tell.
emergence · the horizon
05The Quiet
The measurement will outlive the noise. So will the question.